Finding the Fourth Proportional to 149,553, 206,397.72 and 82,485

Step by Step Solution

1. Step 1: Write the proportion equation
   149,553 : 206,397.72 = 82,485 : x
2. Step 2: Convert to fraction form
   149,553/206,397.72 = 82,485/x
3. Step 3: Cross multiply
   149,553x = 206,397.72 × 82,485
4. Step 4: Simplify right side
   149,553x = 17,024,715,934.20
5. Step 5: Solve for x
   x = 17,024,715,934.20/149,553
6. Step 6: Final answer
   x = 113,837.34